URGENT, Please help with calling one program in another

Question

I am am trying to call Ch4Ex5 within Ch3Ex5. The teacher said it should take about 6 lines of modification within Ch3Ex5 to be able to call out Ch4Ex5. I also might need to modify Ch4Ex5 to get it to work. But I spent many hours and its due soon and I still cant figure it out. I think the teacher assigned this too early in the semester because most the kids dont know how to do it.
Here is Ch3Ex5
import java.util.*;
public class Ch3Ex5
     public static void main(String[] args)
          Scanner kb = new Scanner(System.in);
          int aCount = 0, bCount = 0, cCount = 0, dCount = 0, fCount = 0;
          int nScores = 0;
          int lowest, highest;
          int currentScore;
          int totalOfScores = 0;
          double average;
          do
               System.out.print("Enter a score (negative value to quit): ");
               currentScore = kb.nextInt();
               kb.nextLine();
               if(currentScore > 100)
                    System.out.println("Scores cannot be greater than 100, please try again");
          } while(currentScore > 100);
          lowest = currentScore;
          highest = currentScore;
          while(currentScore > 0)
               nScores++;
               totalOfScores += currentScore;
               if(lowest > currentScore)
                    lowest = currentScore;
               if(highest < currentScore)
                    highest = currentScore;
               if((100 >= currentScore) && (currentScore >= 90)) aCount++;
               else if(currentScore >= 80) bCount++;
               else if(currentScore >= 70) cCount++;
               else if(currentScore >= 60) dCount++;
               else fCount++;
               do
                    System.out.print("Enter a score (negative value to quit): ");
                    currentScore = kb.nextInt();
                    kb.nextLine();
                    if(currentScore > 100)
                         System.out.println("Scores cannot be greater than 100, please try again");
               } while(currentScore > 100);
          System.out.println("Number of scores: " + nScores);
          if(nScores > 0)
               System.out.println("Number of A's = " + aCount);
               System.out.println("Number of B's = " + bCount);
               System.out.println("Number of C's = " + cCount);
               System.out.println("Number of D's = " + dCount);
               System.out.println("Number of F's = " + fCount);
               System.out.println("Percent A's = "+(100.0*aCount/nScores));
               System.out.println("Percent B's = "+(100.0*bCount/nScores));
               System.out.println("Percent C's = "+(100.0*cCount/nScores));
               System.out.println("Percent D's = "+(100.0*dCount/nScores));
               System.out.println("Percent F's = "+(100.0*fCount/nScores));
               System.out.println("High score: " + highest);
               System.out.println("Low score: " + lowest);
               average = (double) totalOfScores / nScores;
               System.out.println("Average score = " + average);
import java.util.*;
public class Ch4Ex5
     public static void main(String[] args)
          Scanner kb = new Scanner(System.in);
          double gradeA, gradeB, gradeC, gradeD, gradeF, total;
          double aCount, bCount, cCount, dCount, fCount;
          System.out.println("Enter in the number of each grades");
          System.out.println("In this order, A's, B's, C's, D's, F's");
          gradeA = kb.nextDouble();
          gradeB = kb.nextDouble();
          gradeC = kb.nextDouble();
          gradeD = kb.nextDouble();
          gradeF = kb.nextDouble();
          System.out.println("0    10   20   30   40   50   60   70   80   90   100");
          System.out.println("|    |    |    |    |    |    |    |    |    |    |");
          System.out.println("***************************************************");
          total = gradeA + gradeB + gradeC + gradeD + gradeF;
          aCount = (((gradeA) / (total)) * 100);
          bCount = (((gradeB) / (total)) * 100);
          cCount = (((gradeC) / (total)) * 100);
          dCount = (((gradeD) / (total)) * 100);
          fCount = (((gradeF) / (total)) * 100);
               for (int i= 0; i < aCount; i = i +2)
               System.out.print('*');
          System.out.println("A");
               for (int i= 0; i < bCount; i = i +2)
               System.out.print('*');
          System.out.println("B");
               for (int i= 0; i < cCount; i = i +2)
               System.out.print('*');
          System.out.println("C");
               for (int i= 0; i < dCount; i = i +2)
               System.out.print('*');
          System.out.println("D");
               for (int i= 0; i < fCount; i = i +2)
               System.out.print('*');
          System.out.println("F");
}

Answer 1

Here's a tip for you: it doesn't really matter if you post in New to Java or Java Programming. Post once, be patient and you will get a reply. As I said keep up this style of posting and nobody will be willing to help you.
Why am I freaking out over double posting? Lets say Fred reads and replies in Thread A. Then Barney comes along and reads Thread B not knowing that Fred has already given an answer in Thread B. So Barney ends up wasting his time by posting the same answer in Thread B. Once again it aint rocket science!